1.   Anthropologists later showed that the angle of the forehead varies within all groups, and that brain size is linked to body size, not to race or intelligence.

2.   Absent physical proof, Klein said, the only way to answer the question might be to examine the reasons for increasing brain size in Homo erectus.

3.   In the Primate Hall, museumgoers can compare hands, feet and brain sizes with other primates.

4.   Reducing the brain size of many early hominids, experts said, could force serious revision in ideas about the evolution of the human brain.

5.   That discovery immediately gained international attention, because it involved the oldest ancestor of man then known and helped show that bipedalism had evolved independently of brain size.

6.   That means the dog brain size is somewhere between the chimpanzee or manatee and the porcupine or rabbit.

7.   Their brain size was small and their immune systems weak.

8.   These were probably factors in subsequent increases in hominid brain sizes.

9.   Falk said the brain size is larger than average for hominids from that era, but far smaller than what experts had predicted for the skull.

10.   The system lets researchers see inside skull fossils and reconstruct the skull from fragments, allowing a precise measure of brain size.